Equal-area map

In map projection, equal-area maps preserve area measure, generally distorting shapes in order to do that. Equal-area maps are also called equivalent or authalic.

"Area-preserving maps" redirects here. For the mathematical concept, see Measure-preserving dynamical system.
The equal-area Mollweide projection

Several equivalent projections were developed in an attempt to minimize the distortion of countries and continents of planet Earth, keeping the area constant. Equivalent projections are widely used for thematic maps showing scenario distribution such as population, farmland distribution, forested areas, etc.

Applications

Equal area representation implies that a region of interest in a particular portion of the map will share the same proportion of area as in any other part of the map.

Statistical grid

The term "statistical grid" refers to a discrete grid (global or local) of a equal-area surface representation, used for data visualization, geocode and statistical spatial analysis.[1][2][3][4]

List of equal-area projections

These are some projections that preserve area:

gollark: Technically, you can get PCIe with some hax.
gollark: Oh, right, I also needed a heatsink case or fan.
gollark: My servers do storage too.
gollark: Of course.
gollark: I was analyzing the possible things I could replace my old HP tower with (as of now it is not replaced but oh well), see, and there were two main options:- a raspberry pi + SSD + power supply + HDMI adapter thing for the screen + SSD case- literally my desktop with the GPU replaced with a fanless one

See also

References
  1. https://inspire.ec.europa.eu/forum/discussion/view/10928/use-of-the-equal-area-grid-grid-etrs89-laea
  2. http://scorus.org/wp-content/uploads/2012/10/2010JurmalaP4.5.pdf
  3. IBGE (2016), “Grade Estatística”. Arquivo grade_estatistica.pdf em FTP ou HTTP, http://geoftp.ibge.gov.br/recortes_para_fins_estatisticos/grade_estatistica/censo_2010
  4. https://www.researchgate.net/publication/236852866_An_Equal_Area_Projection_for_Statistical_Mapping_in_the_EU
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.